11 Air conditioning equipment, namely, air conditioning, air cooling and ventilating apparatus and instruments, heating installations, furnaces, heat pumps, air handlers, pneumatic hot water tanks; and parts, supplies, and components therefor, namely, evaporative air coolers and evaporator coils, electric space heaters, ventilating exhaust fans, ventilators, gas burners, heat exchangers not being parts of machines, air filters, filter driers, temperature controlled liquid mixing valves, gas valves, suction and liquid line driers, heat and steam accumulators